Arch-triangle curling iron



FIG. 1 is a side view of the arch-triangle curling iron the side opposite being a mirror image thereof;

FIG. 2 is a top view of the arch-triangle curling iron;

FIG. 3 is a front view of the arch-triangle curling iron; and,

FIG. 4 is a rear view of the arch-triangle curling iron.

The surfaces or portions of the article not shown in the drawing or described in the specification forms no part of the claimed design. 

The ornamental design for an arch-triangle curling iron, as shown and described. 